Kabushiki Kaisha Toshiba

Satoru Yanaka

Kenji Kamimura

Masataka Kikuchi

Satoru Asai

Tadashi Tanuma

Ryusuke Tsuboi

Katsuhiro Sato

Hiroshi Noguchi

Yasuo Nagase

Kazuto Sasaki

Syouji Inagawa

Hiromichi Nakabayashi

Masahiro Kasiwa

Hitoshi Furugori

Nobuhiro Abe

Kouji Oonishi

The present invention comprises a turntable which holds a turbine part at a predetermined position, the turn table being rotatably supported by a support member, and rotated and driven by a driving motor, an abrasive feeding unit which feeds an abrasive particle having an elastic material as a core to a predetermined position as an abrasive, and a polishing head including an impeller which is rotated and driven by an impeller driving motor at high speed and applies rotary energy to the abrasive particle to be supplied from the abrasive feeding unit, the polishing head injecting the abrasive particle flying from the tangential direction of the impeller at a predetermined speed toward a surface to be polished of the turbine part held on the turntable, and an abrasive recovery unit which recovers the abrasive particle provided for polishing of the turbine part from the polishing head, and feeding into the abrasive feeding unit.

Large part polishing apparatus and polishing method

A surface to be polished of a large part is polished by projecting and colliding an abrasive comprising abrasive grains and an elastic petrochemical high polymer material having the specific gravity of 0.5 to 1.8 g/cmand elasticity of 10 to 200 ckg/cmor an elastic natural material, to the surface to be polished of the large part at a speed of 600 m to 3800 m per minute and by a volume of 5 to 300 cc/cm&#xb7;sec per unit area, and sliding the abrasive.

Method of polishing a large part and abrasive for use in the method

Working machinery for working an elongated work comprises a work stocker configured to store a plurality of works, a work carrying-in machine configured to carry in the works from the work stocker to a working area, a positioning device configured to position the work in the working area, a work clamper provided in the working area and configured to clamp the work in a vertical direction, a plurality of working machines arranged on both sides of the working clamper to work the elongated work from both sides of the work, a plurality of driving devices configured to move the working machines respectively in a longitudinal direction, a controller configured to control the working machines and the driving device, and a work carrying-out machine configured to carry out the work which is completed in working from the working area.

Working machinery for elongated work

Growing community of inventors

Yokosuka, Japan

Satoru Yanaka